| (19) |
 |
|
(11) |
EP 0 182 367 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
02.12.1987 Bulletin 1987/49 |
| (43) |
Date of publication A2: |
|
28.05.1986 Bulletin 1986/22 |
| (22) |
Date of filing: 19.11.1985 |
|
|
| (84) |
Designated Contracting States: |
|
DE GB |
| (30) |
Priority: |
20.11.1984 JP 24316884
31.05.1985 JP 11937285
|
| (71) |
Applicant: Hitachi Maxell Ltd. |
|
() |
|
| (72) |
Inventors: |
|
- Ichijo, Minoru
()
- Ohiwa, Tsunemi
()
- Kokai, Fumio
()
- Kubota, Takashi
()
- Wakai, Kunio
()
|
|
| |
|
| (54) |
Magnetic recording medium and production of the same |
(57) A magnetic recording medium comprising a substrate, a magnetic layer and a protective
layer which consists of an organic polymeric material comprising carbon atom, hydrogen
atom and oxygen atom, the content of the oxygen atom increasing towards the outer
surface of the protective layer, which has improved durability and corrosion resistance.